High [CVE-2026-86047] SQL injection via improper identifier quoting
This high-severity Red Hat Linux advisory covers CVE-2026-86047; related products: Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7.
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Summary
SQL injection via improper identifier quoting. Red Hat rates this important (CVSS 7.7).
Weakness: CWE-89. Red Hat lists fixing advisory RHSA-2026:84689 with package mariadb11-8-main-11.8.9-0.1.hum1, mariadb10-11-main-10.11.18-4.1.1.hum1.
Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 4 more.
Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat OpenStack Platform 13 (Queens); Red Hat package: mariadb10.11; Red Hat package: mariadb11.8.
- 10.6.1
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
- mariadb11-8-main-11.8.9-0.1.hum1
- mariadb10-11-main-10.11.18-4.1.1.hum1
- RHSA-2026:84689
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
Mitigation checklist
- --- CME Mitigation Guidance (2026-10-20) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure. The highest-value action is to ensure strict identifier quoting and literal escaping during SQL serialization and avoid executing unverified database dumps with elevated privileges: upgrade to mariadb 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, 13.0.2 (or the fixed Mariadb/Mariadb:10.11/Mariadb/Mariadb:10.3/Mariadb/Mariadb Devel:10.3/Mariadb/Mariadb:11.8/Mariadb builds), which quote identifiers and escape string literals during statement serialization in SHOW commands and mariadb-dump, closing all 4 injection vectors (crafted username or hostname in SHOW CREATE USER, crafted foreign key constraint name in SHOW CREATE TABLE, crafted option name or foreign data wrapper in SHOW CREATE SERVER, crafted database object names or literals exported via mariadb-dump). Until patched, this is a concern on MariaDB environments where low-privileged users can define database objects and administrators run exported SQL dumps, so restrict database object creation privileges for untrusted accounts and avoid executing exported SQL dumps or SHOW command output with administrative credentials. As a compensating measure, enable audit logging to detect unauthorized privilege and role modifications when SQL dumps are executed, monitor and alert on unintended administrative privilege assignments resulting from executing injected SQL, and restrict database permissions so unprivileged users cannot create or alter database objects. These controls limit blast radius and contain exploitation, but they do not fix the underlying improper identifier quoting defect — apply the upstream patch to fully remediate. Highest-impact CME: CME-1315 Allowlist-Preferred Input Validation (Deny-by-Default Filtering) (high)
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
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